CN115382346A - Mixed gas separation system and mixed gas separation method - Google Patents
Mixed gas separation system and mixed gas separation method Download PDFInfo
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- CN115382346A CN115382346A CN202211010300.9A CN202211010300A CN115382346A CN 115382346 A CN115382346 A CN 115382346A CN 202211010300 A CN202211010300 A CN 202211010300A CN 115382346 A CN115382346 A CN 115382346A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/403—Further details for adsorption processes and devices using three beds
Abstract
Embodiments of the present application relate to a mixed gas separation system and a mixed gas separation method, which include: the gas circulation pipeline, the first adsorption bed, the second adsorption bed, the third adsorption bed and a plurality of switch valves are arranged, after the mixed gas enters the system, two of the first adsorption bed, the second adsorption bed and the third adsorption bed adsorb the mixed gas, the rest adsorption bed desorbs, and the desorbed gas is discharged out of the system through a desorbed gas outlet of the gas circulation pipeline. Through the system, the usage amount of alloy powder in the adsorption bed can be reduced, the powder utilization rate is improved, and the production cost is reduced.
Description
Technical Field
Embodiments of the present disclosure relate to a device and a method for separating and processing mixed gas, and more particularly, to a mixed gas separation system and a mixed gas separation method.
Background
In the prior art, an adsorption bed is adopted to separate and purify different gases in a mixed gas, the mixed gas is input into the adsorption bed, the gas which can be adsorbed in the mixed gas is adsorbed by the adsorption bed, the gas which cannot be adsorbed by the adsorption bed in the mixed gas leaves the adsorption bed in the process that the mixed gas flows through the adsorption bed, the adsorption bed which adsorbs the gas is desorbed, and the desorbed gas exhausted from the adsorption bed is collected, so that the gas separation in the mixed gas is realized.
However, the apparatus and method employed in the prior art have low operation efficiency, and in particular, have low utilization rate of the adsorption powder in the adsorption bed, resulting in a large loading amount of the adsorption powder.
Disclosure of Invention
In view of the above, in order to solve at least one aspect of the problems in the prior art, the present application provides a mixed gas separation system, which includes: the system comprises a gas circulation pipeline, a first adsorption bed, a second adsorption bed, a third adsorption bed and a plurality of switch valves, wherein mixed gas enters the system from the gas circulation pipeline, and the first adsorption bed, the second adsorption bed and the third adsorption bed are in fluid communication with the gas circulation pipeline; the switch valves are arranged on the gas circulation pipelines and are used for controlling the gas circulation pipelines at the positions to be in a gas circulation state or a gas circulation stopping state; the first adsorption bed, the second adsorption bed and the third adsorption bed are arranged to adsorb and desorb a predetermined gas in a mixed gas; the switch valves are arranged to make two of the first adsorption bed, the second adsorption bed and the third adsorption bed adsorb the mixed gas after the mixed gas enters the system, the rest adsorption bed desorbs, and desorption gas is discharged out of the system from a desorption gas outlet of the gas circulation pipeline,
and the residual gas after being adsorbed in the mixed gas is discharged out of the system from a residual gas exhaust outlet of the gas circulation pipeline.
In another aspect of the present application, there is provided a mixed gas separation method for separating a mixed gas by using the mixed gas separation system, wherein the first adsorption bed, the second adsorption bed and the third adsorption bed are capable of adsorbing a predetermined gas in the mixed gas, and the predetermined gas adsorbed by the first adsorption bed, the second adsorption bed and the third adsorption bed is capable of being desorbed from the first adsorption bed, the second adsorption bed and the third adsorption bed and discharged, the method including the steps of: inputting the mixed gas into the mixed gas separation system; controlling the switch valve to enable two of the first adsorption bed, the second adsorption bed and the third adsorption bed to adsorb the mixed gas after the mixed gas enters the system, enabling the rest adsorption bed to desorb, and enabling desorbed gas to be discharged out of the system through a desorbed gas outlet of the gas circulation pipeline; and the residual gas after being adsorbed in the mixed gas is discharged out of the system from a residual gas exhaust outlet of the gas circulation pipeline.
By the system and the method, the usage amount of the alloy powder in the adsorption bed can be reduced, the powder utilization rate is improved, and the production cost is reduced.
Drawings
FIG. 1 is a schematic block diagram of a system provided by an embodiment of the present invention;
FIG. 2 is a schematic diagram of an operating state of the apparatus provided by the embodiment of the present invention;
FIG. 3 is a schematic diagram of another operating state of the apparatus provided by the embodiment of the present invention;
fig. 4 is a schematic diagram of another operation state of the device provided by the embodiment of the invention.
It is noted that the drawings are not necessarily to scale and are merely illustrative in nature and not intended to obscure the reader.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clear, the technical solutions of the present application will be described below in detail and completely with reference to the accompanying drawings of the embodiments of the present application. It should be apparent that the described embodiment is one embodiment of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the application without any inventive step, are within the scope of protection of the application.
It is to be noted that, unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which this application belongs. If the description "first", "second", etc. is referred to throughout, the description of "first", "second", etc. is used only for distinguishing similar objects, and is not to be construed as indicating or implying a relative importance, order or number of technical features indicated, it being understood that the data described in "first", "second", etc. may be interchanged where appropriate. If "and/or" is presented throughout, it is meant to include three juxtapositions, exemplified by "A and/or B" and including either scheme A, or scheme B, or schemes in which both A and B are satisfied. Furthermore, spatially relative terms, such as "above," "below," "top," "bottom," and the like, may be used herein for ease of description to describe one element or feature's spatial relationship to another element or feature as illustrated in the figures, and should be understood to encompass different orientations in use or operation in addition to the orientation depicted in the figures.
As shown in fig. 1, there is shown a schematic diagram of a mixture gas separation system of an embodiment of the present application, comprising: a gas flow line, a first adsorption bed 21, a second adsorption bed 22, a third adsorption bed 23 and a plurality of on-off valves 101-117, wherein the mixed gas enters the system from the gas flow line, and the first adsorption bed 21, the second adsorption bed 22 and the third adsorption bed 23 are in fluid communication with the gas flow line; a plurality of on-off valves 101 to 117 provided in the gas flow passage for controlling the gas flow passage at positions thereof to be in a gas flow state or a gas flow blocking state; the first adsorption bed 21, the second adsorption bed 22 and the third adsorption bed 23 are provided to adsorb and desorb a predetermined gas in the mixed gas; the plurality of on-off valves 101 to 117 are provided so that when the mixed gas enters the system, two of the first adsorption bed 21, the second adsorption bed 22, and the third adsorption bed 23 adsorb the mixed gas, the remaining one of the adsorption beds desorbs the desorbed gas, the desorbed gas is discharged from the system through the desorbed gas outlet of the gas flow line, and the residual gas adsorbed in the mixed gas is discharged from the system through the residual gas discharge outlet of the gas flow line.
As shown in fig. 1, the positional relationship among the on-off valve, the first adsorption bed, the second adsorption bed, and the third adsorption bed, the gas circulation line, the mixed gas inlet, the residual gas outlet, and the desorption gas outlet is illustrated.
Through the system of the embodiment of this application, utilize two adsorption beds to adsorb, another adsorption bed desorbs, reduces the use amount of alloy powder in the adsorption bed, has improved the powder utilization ratio, has reduced manufacturing cost.
Fig. 1 is a schematic diagram showing a positional relationship among the on-off valve, the first adsorption bed, the second adsorption bed, the third adsorption bed, the gas flow line, the mixed gas inlet, the residual gas outlet, and the desorption gas outlet, and those skilled in the art may adopt other arrangements of the above-described technical elements.
In some embodiments of the present application, the first adsorption bed, the second adsorption bed, and the third adsorption bed are alternately in the following states by setting the on and off operations of the switching valves: two of the first adsorption bed, the second adsorption bed and the third adsorption bed adsorb the mixed gas, and the rest adsorption bed desorbs.
As shown in fig. 1, in some embodiments of the present application, pressure sensors P1, P2 are further included, the pressure sensors being disposed at positions of the gas circulation lines near an inlet of the mixture gas into the system and at positions of the gas circulation lines near an outlet of the mixture gas out of the system.
Hereinafter, the positional relationship among the on-off valve, the first adsorption bed, the second adsorption bed, and the third adsorption bed, the gas flow line, the mixed gas inlet, the surplus gas outlet, and the desorbed gas outlet will be further described with reference to fig. 1.
A first switch valve 101 and a second switch valve 102 are arranged between the first adsorption bed 21 and the mixed gas inlet of the gas circulation pipeline; a third on-off valve 103 is provided between the first adsorption bed 21 and the second adsorption bed 22, and a fourth on-off valve 104, a fifth on-off valve 105, and a sixth on-off valve 106 are provided between the second adsorption bed 22 and the residual gas outlet of the gas mixture in the gas flow line; a seventh on-off valve 107 and an eighth on-off valve 108 are provided between the third adsorption bed 23 and the desorption gas outlet, and a ninth on-off valve 109 and the first on-off valve 101 are provided between the third adsorption bed 23 and the mixed gas inlet of the gas flow line; a tenth on-off valve 110 and a sixth on-off valve 106 are provided between the first adsorption bed 21 and the remaining gas outlet of the mixture gas of the gas circulation line; an eleventh on-off valve 111 and a sixth on-off valve 106 are provided between the third adsorption bed 23 and the surplus gas outlet of the mixed gas in the gas flow line; a twelfth switching valve 112 and the seventh switching valve 107 are provided between the first adsorption bed 21 and the third adsorption bed 22; a first switch valve 101 and a thirteenth switch valve 113 are provided between the second adsorption bed 22 and the mixed gas inlet of the gas circulation line; a fourteenth on-off valve 114 and a seventh on-off valve 107 are provided between the second adsorption bed 22 and the third adsorption bed 23; a fourth switching valve 104 and a fifteenth switching valve 115 are provided between the second adsorption bed 22 and the third adsorption bed 23; a sixteenth on-off valve 116 and a seventeenth on-off valve 117 are provided between the third adsorption bed 23 and the first adsorption bed 21.
According to the system provided by the embodiment of the present application, a plurality of on-off valves are multiplexed, for example, the on-off valve 101 is a master switch of the mixed gas inlet system, in other words, each adsorption bed is communicated with the inlet of the mixed gas, and the on-off valve 101 is required to be in a gas circulation state. For another example, the on-off valve 106 is a master switch of the off-gas discharge system, that is, each adsorbent bed is to be communicated with the off-gas outlet, and the on-off valve 106 is required to be in a gas circulation state. For another example, the on-off valve 108 is the main switch for the desorption gas to leave the system, in other words, each adsorbent bed is connected to the desorption gas outlet, and the on-off valve 108 is required to be in a gas circulation state.
The positional relationship among the on-off valve, the first adsorption bed, the second adsorption bed, the third adsorption bed, the gas flow line, the mixed gas inlet, the residual gas outlet, and the desorbed gas outlet is not a limitation of the present application.
The above arrangement is a preferable mode by which the maximum reduction in the amount of alloy powder used in the adsorption bed is reduced, and the powder utilization rate is maximized.
By controlling the state of the on-off valve, the first adsorption bed, the second adsorption bed and the third adsorption bed can be alternately in the following states: two of the first adsorption bed, the second adsorption bed and the third adsorption bed adsorb the mixed gas, and the rest adsorption bed desorbs.
Hereinafter, the operation of the switching valve to alternately bring the first adsorption bed, the second adsorption bed and the third adsorption bed into the following states will be described in further detail with reference to fig. 2, 3 and 4: two of the first adsorption bed, the second adsorption bed and the third adsorption bed adsorb the mixed gas, and the rest adsorption bed desorbs.
Fig. 2 is a schematic view showing still another operation state of the apparatus according to the embodiment of the present invention, in which the first adsorption bed 21 and the second adsorption bed 22 are in an adsorption state and the third adsorption bed 23 is in a desorption state.
In the example shown in fig. 2, the following on-off valves 101, 102, 103, 104, 105, 106, and 107 are in a gas flow state, and the other on-off valves are closed, that is, the gas does not flow through the flow line.
The mixed gas enters the system from the gas pipeline inlet, reaches the first adsorption bed 21 through the on-off valves 101 and 102, is subjected to adsorption treatment by the first adsorption bed 21 and then discharged from the first adsorption bed 21, reaches the second adsorption bed 22 through the on-off valve 103, is subjected to adsorption treatment by the second adsorption bed 22, and then is discharged from the second adsorption bed 22 as the residual gas of the mixed gas, and is discharged from the residual gas outlet of the system through the on-off valves 104, 105 and 106.
The gas desorbed via the third adsorbent bed 23 is discharged from the system through the desorption gas outlets of the system via the on-off valves 107 and 108.
Fig. 3 is a schematic view showing still another operation of the apparatus according to the embodiment of the present invention, in which the second adsorption bed 22 and the third adsorption bed 23 are in the adsorption state and the first adsorption bed 21 is in the desorption state.
In the example shown in fig. 3, the following on-off valves 101, 104, 106, 108, 111, 112, 113, and 116 are in a gas flow state, and the other on-off valves are closed, that is, the gas is not allowed to flow through the flow lines.
The mixed gas enters the system from the gas pipeline inlet, then reaches the second adsorption bed 22 through the on-off valves 101 and 113, is discharged from the second adsorption bed 22 after being subjected to adsorption treatment by the second adsorption bed 22, reaches the third adsorption bed 23 through the on-off valves 104 and 116, is subjected to adsorption treatment by the third adsorption bed 23, and then is discharged from the third adsorption bed 23 as the residual gas of the mixed gas, and is discharged from the system through the residual gas outlet of the system through the on-off valves 111 and 106.
The gas desorbed via the first adsorption bed 21 is discharged from the system through the desorption gas outlets of the system via the on-off valves 112 and 108.
Fig. 4 is a schematic view showing still another operation state of the apparatus according to the embodiment of the present invention, in which the first adsorption bed 21 and the third adsorption bed 23 are in the adsorption state and the second adsorption bed 22 is in the desorption state.
In the example shown in fig. 4, the following on-off valves 101, 106, 108, 109, 110, 114, 115, and 117 are in a gas flow state, and the other on-off valves are closed, that is, the gas does not flow through the flow lines.
The mixed gas enters the system through the gas line inlet, reaches the third adsorption bed 23 through the on-off valves 101 and 109, is subjected to adsorption treatment by the third adsorption bed 23, is discharged from the third adsorption bed 23, reaches the first adsorption bed 21 through the on-off valves 115 and 117, is subjected to adsorption treatment by the first adsorption bed 21, is discharged from the first adsorption bed 21 as the remaining gas of the mixed gas, and is discharged from the system through the remaining gas outlet of the system through the on-off valves 110 and 106.
The gas desorbed via the second adsorption bed 22 is discharged from the system through the desorption gas outlets of the system via the on-off valves 114 and 108.
The first adsorption bed, the second adsorption bed and the third adsorption bed in the system can be operated alternately according to the mode from fig. 2 to fig. 4 by controlling the states of the switching valves.
According to an embodiment of the present application, there is also provided a mixed gas separation method for separating a mixed gas by using the mixed gas separation system, wherein the first adsorption bed, the second adsorption bed and the third adsorption bed are capable of adsorbing a predetermined gas in the mixed gas, and the predetermined gas adsorbed by the first adsorption bed, the second adsorption bed and the third adsorption bed is capable of being desorbed from the first adsorption bed, the second adsorption bed and the third adsorption bed, the method includes the following steps: inputting the mixed gas into a mixed gas separation system; controlling the switch valve to enable two of the first adsorption bed, the second adsorption bed and the third adsorption bed to adsorb the mixed gas after the mixed gas enters the system, desorbing the rest adsorption bed, and discharging the desorbed gas out of the system through a desorbed gas outlet of the gas circulation pipeline; the residual gas after the adsorption in the mixed gas is discharged out of the system from a residual gas exhaust outlet of the gas circulation pipeline.
By the method, the usage amount of the alloy powder in the adsorption bed can be reduced, the powder utilization rate is improved, and the production cost is reduced.
For the embodiments of the present application, it should also be noted that, in a case of no conflict, the embodiments of the present application and features of the embodiments may be combined with each other to obtain a new embodiment.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and the scope of the present application shall be subject to the scope of the claims.
Claims (5)
1. A mixture gas separation system, comprising:
a gas circulation pipeline, a first adsorption bed, a second adsorption bed, a third adsorption bed and a plurality of switch valves,
the mixed gas enters the system from the gas circulation pipeline,
the first, second, and third adsorbent beds are in fluid communication with the gas flow line;
the switch valves are arranged on the gas circulation pipeline and are used for controlling the gas circulation pipeline at the position to be in a gas circulation state or a gas circulation stopping state;
the first adsorption bed, the second adsorption bed and the third adsorption bed are arranged to adsorb and desorb a predetermined gas in a mixed gas;
the switch valves are arranged to make two of the first adsorption bed, the second adsorption bed and the third adsorption bed adsorb the mixed gas after the mixed gas enters the system, the rest adsorption bed desorbs, and desorption gas is discharged out of the system from a desorption gas outlet of the gas circulation pipeline,
and the residual gas after being adsorbed in the mixed gas is discharged out of the system from a residual gas exhaust outlet of the gas circulation pipeline.
2. The mixture gas separation system according to claim 1,
the first adsorption bed, the second adsorption bed and the third adsorption bed are alternately in the following states by setting the on and off operations of the switching valve:
and two of the first adsorption bed, the second adsorption bed and the third adsorption bed are used for adsorbing the mixed gas, and the rest adsorption bed is used for desorbing.
3. The mixture gas separation system according to claim 1,
the system also comprises a pressure sensor which is arranged at the position of a gas circulation pipeline near an inlet of the mixed gas entering the system and at the position of a gas circulation pipeline near an outlet of the mixed gas discharging the rest gas of the mixed gas.
4. The mixture gas separation system according to claim 1,
the plurality of switching valves are sequentially arranged:
a first switch valve and a second switch valve are arranged between the first adsorption bed and a mixed gas inlet of the gas circulation pipeline;
a third on-off valve is arranged between the first adsorption bed and the second adsorption bed,
a fourth switch valve, a fifth switch valve and a sixth switch valve are arranged between the second adsorption bed and a residual gas outlet of the mixed gas of the gas circulation pipeline;
a seventh switch valve and an eighth switch valve are arranged between the third adsorption bed and the desorption gas outlet, and a ninth switch valve and the first switch valve are arranged between the third adsorption bed and the mixed gas inlet of the gas circulation pipeline;
a tenth switching valve and the sixth switching valve are arranged between the first adsorption bed and a residual gas outlet of the mixed gas of the gas circulation pipeline;
an eleventh switch valve and a sixth switch valve are arranged between the third adsorption bed and a residual gas outlet of the mixed gas of the gas circulation pipeline;
a twelfth switching valve and the seventh switching valve are provided between the first adsorption bed and the third adsorption bed;
a first switch valve and a thirteenth switch valve are arranged between the second adsorption bed and a mixed gas inlet of the gas circulation pipeline;
a fourteenth switching valve and the seventh switching valve are arranged between the second adsorption bed and the third adsorption bed;
disposing the fourth and fifteenth switching valves between the second and third adsorption beds;
the sixteenth on-off valve and the seventeenth on-off valve are provided between the third adsorption bed and the first adsorption bed.
5. A mixed gas separation method for separating a mixed gas by using the mixed gas separation system according to any one of claims 1 to 4, wherein the first adsorption bed, the second adsorption bed and the third adsorption bed are capable of adsorbing a predetermined gas in the mixed gas, and the predetermined gas adsorbed by the first adsorption bed, the second adsorption bed and the third adsorption bed is capable of being desorbed from the first adsorption bed, the second adsorption bed and the third adsorption bed and discharged, the method comprising the steps of:
inputting the mixed gas into the mixed gas separation system;
controlling the switch valve to enable two of the first adsorption bed, the second adsorption bed and the third adsorption bed to adsorb the mixed gas after the mixed gas enters the system, enabling the rest adsorption bed to desorb, and enabling desorbed gas to be discharged out of the system through a desorbed gas outlet of the gas circulation pipeline;
and the residual gas after being adsorbed in the mixed gas is discharged out of the system from a residual gas exhaust outlet of the gas circulation pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202211010300.9A CN115382346A (en) | 2022-08-23 | 2022-08-23 | Mixed gas separation system and mixed gas separation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211010300.9A CN115382346A (en) | 2022-08-23 | 2022-08-23 | Mixed gas separation system and mixed gas separation method |
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| CN202211010300.9A Pending CN115382346A (en) | 2022-08-23 | 2022-08-23 | Mixed gas separation system and mixed gas separation method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101932373A (en) * | 2008-02-04 | 2010-12-29 | 国际壳牌研究有限公司 | A process for regeneration of adsorbent beds |
| CN103611388A (en) * | 2013-11-21 | 2014-03-05 | 马军 | Adsorption device for adsorbing organic solvents from waste gas containing organic solvents |
| CN106823684A (en) * | 2017-03-30 | 2017-06-13 | 东北大学 | The temperature swing adsorption system and method for carbon dioxide in energy-saving separation industrial smoke |
| CN111001259A (en) * | 2019-12-29 | 2020-04-14 | 宁波弘景环保科技有限公司 | Processing apparatus who contains chlorine waste gas |
| CN113041771A (en) * | 2021-03-19 | 2021-06-29 | 周静怡 | Efficient oil gas recovery method for low-temperature adsorption and high-temperature desorption |
-
2022
- 2022-08-23 CN CN202211010300.9A patent/CN115382346A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101932373A (en) * | 2008-02-04 | 2010-12-29 | 国际壳牌研究有限公司 | A process for regeneration of adsorbent beds |
| CN103611388A (en) * | 2013-11-21 | 2014-03-05 | 马军 | Adsorption device for adsorbing organic solvents from waste gas containing organic solvents |
| CN106823684A (en) * | 2017-03-30 | 2017-06-13 | 东北大学 | The temperature swing adsorption system and method for carbon dioxide in energy-saving separation industrial smoke |
| CN111001259A (en) * | 2019-12-29 | 2020-04-14 | 宁波弘景环保科技有限公司 | Processing apparatus who contains chlorine waste gas |
| CN113041771A (en) * | 2021-03-19 | 2021-06-29 | 周静怡 | Efficient oil gas recovery method for low-temperature adsorption and high-temperature desorption |
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